Laboratory Control Sample
(LCS) is a specimen of known composition prepared using contaminant-free reagent water, or an inert solid, that is spiked with the analyte of interest at the midpoint of the calibration curve or at the level of concern; and then analyzed using the same preparation, reagents, and analytical methods employed for regular specimens and at the intervals set in the QA Project Plan.
The Laboratory Data Qualifier is a Code applied to the data by the analytical testing facility to indicate a verifiable or potential data deficiency or bias.
are two or more representative portions taken from one homogeneous sample
by the analyst and analyzed in the same testing facility.
Lactate means to secrete or produce milk.
Deutsch: Laktation / Français: Lactation / Italiano: Lattazione
Lactation refers to the secretion of milk from the mammary glands, and the period of time that a mother lactates to feed its young. This process can occur with almost all post-partum female mammals, although it may have predated the existence of mammals. The process may also be referred to as breastfeeding or nursing when referring to humans.
A lacustrine zone
is area of a reservoir
which is most lake
velocities are much slower than for riverine or transitional zones.
is Earthen storage structure with sufficient dilution water added to allow Microorganisms
to biodegrade and treat
is a standing body of water greater than 1 hectare (about 2.5 acre
) that has at least 1000 m2
(about 0.25 acre) of open water and is at least 1 meter (about
are substantial inland bodies of standing water.